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EP0265823A1 - Procédé de fabrication d'un module échangeur de masse à fibres creuses et module ainsi fabriqué - Google Patents

Procédé de fabrication d'un module échangeur de masse à fibres creuses et module ainsi fabriqué Download PDF

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Publication number
EP0265823A1
EP0265823A1 EP87115388A EP87115388A EP0265823A1 EP 0265823 A1 EP0265823 A1 EP 0265823A1 EP 87115388 A EP87115388 A EP 87115388A EP 87115388 A EP87115388 A EP 87115388A EP 0265823 A1 EP0265823 A1 EP 0265823A1
Authority
EP
European Patent Office
Prior art keywords
hollow fibers
housing
hollow
spacing
spacing material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP87115388A
Other languages
German (de)
English (en)
Other versions
EP0265823B1 (fr
Inventor
Wolf-Dieter Dipl.-Ing. Schmidt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Draegerwerk AG and Co KGaA
Original Assignee
Draegerwerk AG and Co KGaA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Draegerwerk AG and Co KGaA filed Critical Draegerwerk AG and Co KGaA
Publication of EP0265823A1 publication Critical patent/EP0265823A1/fr
Application granted granted Critical
Publication of EP0265823B1 publication Critical patent/EP0265823B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/02—Hollow fibre modules
    • B01D63/021—Manufacturing thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/02—Specific tightening or locking mechanisms
    • B01D2313/025—Specific membrane holders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/22—Cooling or heating elements
    • B01D2313/221—Heat exchangers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/355—Heat exchange having separate flow passage for two distinct fluids
    • Y10S165/40—Shell enclosed conduit assembly
    • Y10S165/401—Shell enclosed conduit assembly including tube support or shell-side flow director
    • Y10S165/416—Extending transverse of shell, e.g. fin, baffle
    • Y10S165/422—Unitary tube support or shell-side flow director carried by single tube

Definitions

  • the invention relates to a method for producing a hollow fiber mass transfer module, in which a plurality of parallel hollow fibers are introduced into a housing and are sealed at their ends with sealing compound with one another and with the inner wall of the housing, wherein between the inner wall of the Ge house and the outer sides of the hollow fibers, a first flow space is formed, which is separated from the second flow space determined by the inner spaces of the hollow fibers.
  • a module produced by this method is also described.
  • Hollow fiber mass transfer modules are manufactured in numerous different shapes. Elongated, essentially cylindrical housing shapes are known in which the hollow fibers extend coaxially with the housing from one end to the other. Also known are designs of modules in which the hollow fibers run in a loop in the housing, so that inlet and outlet openings lie essentially in one plane.
  • Such hollow fiber mass transfer modules are used for a targeted mass exchange between two fluids (gas, liquid).
  • One fluid flows on the outside of the hollow fibers in a first flow space, while the other fluid is conducted in the second flow space determined by the inner spaces of the hollow fibers.
  • the walls of the hollow fibers preferably consist of semi-permeable membranes, a selective transfer of substances from one fluid into the other is possible.
  • Hollow fiber mass transfer modules hereinafter briefly as “Hollow fiber modules” are used in the medical field of dialyzers and in hemofiltration.
  • a further area of application is in humidifiers, which are used, for example, in conjunction with devices for artificial ventilation.
  • respiratory air humidifiers are described in DE-PS 26 17 985 and in EP-B1 0 009 543.
  • hollow fiber modules as humidifiers, relatively large amounts of substance (water) and thermal energy must be exchanged. At the same time, the module should have a relatively low flow resistance in the two flow spaces.
  • the second flow space determined by the inner spaces of the hollow fibers can easily be enlarged by using hollow fibers with a relatively large diameter or by a larger number of hollow fibers connected in parallel, difficulties arise in relation to the flow resistance between the outer sides of the hollow fibers, ie relatively in the first flow space to keep low. If the elastic hollow fibers do not assume perfect, mutual spacing positions and partially abut one another, the flow resistance is significantly increased. An increase in the distance between the hollow fibers, which would preclude mutual contact, leads to an undesirable He increase in dimensions.
  • the invention is based on the task of increasing the performance of hollow fiber modules by improving the flow conditions on the outside of the hollow fibers without increasing the dimensions.
  • This object is achieved in that a spacing material is applied to the outside of the hollow fibers prior to insertion into the housing, the thickness of the material being the desired spacing of the hollow fibers is chosen accordingly, and that the hollow fibers are bundled inserted into the housing and fixed with the potting compound.
  • spacing material is to be understood to mean the most diverse, regularly or irregularly shaped particles, for example in the form of spheres or fragments, and also material distributions designed in layers.
  • care must be taken to ensure that a sufficient size of the flow space is ensured in the case of particles or the like remaining on the outside of the hollow fibers.
  • An expedient development of the invention can provide that the spacing material is at least partially detached after fixing the hollow fibers to release the flow space between the hollow fibers.
  • the detachment can take place in various ways, for example by mechanical washing away and blowing out or by dissolving the particles of the spacing material or the coating with aqueous or organic solvents. It is important to ensure that the solvent does not attack the hollow fibers or the potting compound.
  • An advantageous embodiment of the method can consist in that regularly or irregularly shaped plastic particles are used, in which the adhesive connection with the hollow fibers is caused by electrostatic charging.
  • a highly viscous, adhesive material that can be pulled out in the form of a thread in the liquid state can be used as the spacing material, which material is pulled out of a nozzle as a thin thread of about 0.1 to 1 mm in diameter and is distributed in several, over a flat fiber bundle. is distributed approximately across the course of the fibers lying strips.
  • the fibers are pulled apart, so that adhesive points remain on the individual fibers, in which the spacing material solidifies.
  • hollow fiber modules can be produced by the specified method;
  • the embodiment in which the hollow fibers are arranged at a uniform mutual distance appears to be particularly expedient.
  • the hollow fiber module 1 shown in FIG. 1 consists of a cylindrical housing 2 with two circular recesses 3, 4. End pieces 5,6 are placed sealingly on the recesses 3, 4. The end pieces are 5,6 each provided with connecting pieces 7.8, which are coaxial to the cylindrical housing 2.
  • a multiplicity of essentially parallel hollow fibers 11 are arranged in the housing 2, which are each sealed tightly to one another and to the inner wall of the housing 2 by casting compound layers 12 in the region of their inlet and outlet recesses.
  • To form a first flow space 13 two connecting pieces 14, 15 are provided in the wall of the housing.
  • a second flow space 10 is formed by the interior spaces of the hollow fibers 11.
  • hollow fibers are drawn very coarsely in Fig. 1.
  • hollow fibers made of polysulfone are preferably used which have an inner diameter of 1 mm to 3 mm and a wall thickness of 0.05 mm to 0.2 mm.
  • a hollow fiber module generally contains several hundred hollow fibers.
  • the uniform spacing of the hollow fibers 11 is ensured by the particles 16 lying on the outside of the hollow fibers 11 at least in the manufacturing process.
  • Fig. 3 illustrates that a significantly improved cross-flow between the hollow fibers is possible due to the manufacturing method according to the invention. While the hollow fibers in the previously known modules are in part close to each other, a prescribed minimum distance is guaranteed by the design according to the invention. This creates longitudinal channels 17 through which the fluid flowing around the outside of the hollow fibers flows.
  • the particles 16 can be removed from the module after the casting according to an embodiment of the method according to the invention. This procedure is particularly expedient if the hollow fibers have sufficient stability so that they retain their position in the module after the spacing particles have been removed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
EP87115388A 1986-10-28 1987-10-21 Procédé de fabrication d'un module échangeur de masse à fibres creuses et module ainsi fabriqué Expired - Lifetime EP0265823B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3636583 1986-10-28
DE19863636583 DE3636583A1 (de) 1986-10-28 1986-10-28 Verfahren zum herstellen eines hohlfaser-stoffaustauschmoduls und nach diesem verfahren hergestelltes modul

Publications (2)

Publication Number Publication Date
EP0265823A1 true EP0265823A1 (fr) 1988-05-04
EP0265823B1 EP0265823B1 (fr) 1990-10-17

Family

ID=6312605

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87115388A Expired - Lifetime EP0265823B1 (fr) 1986-10-28 1987-10-21 Procédé de fabrication d'un module échangeur de masse à fibres creuses et module ainsi fabriqué

Country Status (7)

Country Link
US (2) US4769146A (fr)
EP (1) EP0265823B1 (fr)
JP (1) JPS63123405A (fr)
BR (1) BR8704935A (fr)
CA (1) CA1300521C (fr)
DE (2) DE3636583A1 (fr)
DK (1) DK401687A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0350252A1 (fr) * 1988-07-06 1990-01-10 Eastman Kodak Company Espacement d'éléments définissant un passage pour un débit de fluide

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EP0519132A1 (fr) * 1989-10-18 1992-12-23 Exxon Research And Engineering Company Module à fibres creuses
SE465355B (sv) * 1989-12-07 1991-09-02 Provivo Ab Engaangsfilter och foerfarande foer filtrering av en partikelbemaengd vaetskevolym
US5186832A (en) * 1991-12-31 1993-02-16 Hoechst Celanese Corporation Spiral-wound hollow fiber membrane fabric cartridges and modules having integral turbulence promoters
FI964768A0 (fi) * 1994-06-02 1996-11-29 Union Engineering As Menetelmä onttoja kuituja käsittävien kappaleiden valmistamiseksi onttokuitumoduleja varten ja tällainen onttomodulia varten tarkoitettu onttoja kuituja käsittävä kappale
GB9514527D0 (en) * 1995-07-15 1995-09-13 Smiths Industries Plc Heat and moisture exchangers
DE19652695C1 (de) * 1996-12-18 1997-10-30 Saxonia Medical Gmbh Hohlfasermodul mit profilierten Abstandsfäden
JP4804599B2 (ja) 1996-12-20 2011-11-02 シーメンス・ウォーター・テクノロジーズ・コーポレイション 洗浄方法
US20040232076A1 (en) * 1996-12-20 2004-11-25 Fufang Zha Scouring method
FR2785980B1 (fr) * 1998-11-16 2001-11-30 Valeo Thermique Moteur Sa Echangeur de chaleur a faisceau de tubes contenu dans un boitier cylindrique
CO5241319A1 (es) * 1999-03-29 2003-01-31 Garfield Int Invest Ltd Cartuchos de osmosis invertida y membranas de osmosis invertida
US6653012B2 (en) * 2000-01-19 2003-11-25 Honda Giken Kogyo Kabushiki Kaisha Humidifier
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US7481936B2 (en) * 2001-10-17 2009-01-27 Transvivo Inc. Method and apparatus for patient fluid management
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EP2380854A3 (fr) 2004-04-22 2012-07-04 Siemens Industry, Inc. Appareil de filtration comprenant un bioréacteur à membrane et une cuve de traitement pour digérer les matières organiques
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0350252A1 (fr) * 1988-07-06 1990-01-10 Eastman Kodak Company Espacement d'éléments définissant un passage pour un débit de fluide

Also Published As

Publication number Publication date
DE3765617D1 (de) 1990-11-22
BR8704935A (pt) 1988-05-24
DK401687D0 (da) 1987-07-31
EP0265823B1 (fr) 1990-10-17
US4840227A (en) 1989-06-20
JPH0318925B2 (fr) 1991-03-13
DE3636583A1 (de) 1988-05-05
DK401687A (da) 1988-04-29
CA1300521C (fr) 1992-05-12
US4769146A (en) 1988-09-06
JPS63123405A (ja) 1988-05-27

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